摘要
采用熔融共混的方法制备了聚苯硫醚(PPS)/钕铁硼(NdxFe94-xB6)复合材料,分析了复合材料的形态、力学性能及电磁性能。结果表明,均匀分散的钕铁硼粒子与PPS基体界面结合紧密;与纯PPS相比,钕铁硼添加量为50%时,复合材料的拉伸强度、弯曲强度和冲击强度分别提高了49%、44%和700%;但过多的钕铁硼填充量反而不利于复合材料力学性能的提升;复合材料的介电常数和磁导率都随其含量增加而增大,在高含量下,介电常数虚部随频率增加明显增大。通过对复合材料反射衰减计算,匹配厚度d=2 mm时,复合材料在高频段出现明显的吸收峰,特别是含量为50%时,吸收峰达到-18.3 dB,对应的频率为16.6 GHz。
Poly （phenylene sulfide ） （ PPS） / NdxFe94-xB6 composites were prepared via melt mixing. The morphology ,mechanical and electromagnetic properties of PPS / NdxFe94-xB6 composites were studied. The results indicated that NdxFe94-xB6 particles were well dispersed in the PPS matrix. In contrast to pure PPS resin , tensile strength,bending strength and impact strength of the composites increased by 100 %,44 %,800 %,respectively; whereas overloading NdxFe94-xB6 decreased the mechanical properties;the permittivity and magnetic conductivity increase with the content of NdxFe94-xB6. At the frequency range 0.5-18 GHz, the imaginary parts of permittivity increase obviously in high contents. It was found that the composites have excellent microwave absorbing characteristics at the high frequency range, while matching thickness was 2 mm, the maximum reflection loss was about -18.3 dB corresponding to the frequency 16.6 GHz when the NdxFe94-xB6 content was 50 %.
出处
《中国塑料》
CAS
CSCD
北大核心
2010年第6期45-49,共5页
China Plastics
关键词
聚苯硫醚
钕铁硼
复合材料
力学性能
电磁性能
poly（phenylene sulfide）
NdxFe94-xB6
composite
mechanical property
electromag-netic property
